The number of emails received by a customer service department in February is eq

Question

The number of emails received by a customer service department in February is equally likely to be any of the values in (180, 181, ..., 275}. Let X denote the number of emails received in February. What is the probability that exactly 220 emails are received in February? (Report answer to three decimal places. Answer must be within +/-0.001 of correct value.) The number of emails received by a customer service department in February is equally likely to be any of the values in (180, 181, ..., 275}. Let X denote the number of emails received in February. What is the standard deviation of the number of emails received in February? (Report answer to three decimal places. Answer must be within +/-0.001 of correct value.)

Explanation / Answer

13)

180,181,182,....275 total 96

probability of gettig 220 is 1/96 = 0.0104

  

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